Jev Hallucination

A pre-registered benchmark pitting a 2B laptop model (Gemma 4 E2B) against 500 SimpleQA questions while TypeSafe Jev makes every call — whether to search, which pages count, whether each sentence is backed. Jev's passage confidence scored AUROC 0.899, but the judged pipeline still lost its pre-registered bar.

Pre-registered benchmark adding Jev 1.13 to Stanford MedHELM's MedHallu results: one Noul asks whether a proposed answer misrepresents its PubMed abstract. Jev scored 92.9% on 1,000 test items at a 204 ms median and USD 0.03 per 1,000 checks through OpenRouter.

Precision-first RAG orchestrator that wires Jev as a System 1 gate around an LLM: it routes chitchat, triages retrieved chunks with relevance and answer-evidence Nouls, then verifies each claim and withholds drafts whose claims are unsupported.